题目内容
计算机的硬件系统至少应包含存储器、输入设备、输出设备和（）。
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沉筒式液位计的输出信号不仅与液位高度有关，还与（）有关。
Translate the following passage into Chinese.Travelers of interest to the industry are usually classified into those whose travels require the use of overnight accommodation and those whose trips last less than one day. As can be noted in the WTO definitions， these groups are further divided into international travelers and domestic travelers. A major reason for this distinction is that most nations are especially interested in developing tourism as an export industry. Export industries promote national economic development by generating new wealth for the state. Domestic tourism may be important for local or regional development， but many economists suggest it usually has the effect of merely shifting wealth from one region to another， and not of contributing to actual net growth in the gross domestic product of a country. Some national tourism organizations have found it useful to make a further distinction between intercontinental travel and travel between adjacent countries.
实际起作用的过滤推动力是（）
Translate the following phrases into English： 66. 世界旅游组织（全称） 67. 饭店联号 68. 带薪假日 69. 语言障碍 70. 旅游零售商 71. 签约国 72. 处境旅游 73. 在矿泉疗养地度假 74. 文化交流 75. 税收收入
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